If your computer will not connect to Wi-Fi, the cause is usually one of four things: Wi-Fi is turned off, the saved password is wrong, the router or NBN service has a problem, or your computer has a driver, settings or hardware issue. The good news is that most of these can be fixed quickly at home.
Common Reasons Your Computer Can’t Connect to Wi-Fi
The current version of this article explains the basics well, but it leaves some ranking opportunities on the table. It does not strongly target high-intent commercial phrases such as Wi-Fi technician Melbourne, computer repairs Melbourne, home network setup Melbourne and NBN installation Melbourne, and it could do a better job of matching the way users actually search. Searchers often use phrases like laptop won’t connect to Wi-Fi, PC connected but no internet, computer not detecting Wi-Fi and Wi-Fi problems after Windows update. This version expands coverage around those intents while keeping the article useful and readable.
1. Simple settings issue
Wi-Fi may be switched off, airplane mode may be on, the wrong network may be selected, or the saved password may be outdated.
2. Router or modem problem
Your router may need a restart, a firmware update, or better positioning. Sometimes the NBN service itself is down.
3. Computer software issue
Network drivers, VPN software, security tools or damaged network settings can stop a Windows PC or Mac from connecting properly.
4. Hardware or signal issue
A failing wireless card, weak signal, dead zone, interference, or poor router placement can cause repeated Wi-Fi dropouts.
| What you see | Most likely cause | What to do next |
|---|---|---|
| Computer cannot see any Wi-Fi networks | Wi-Fi turned off, adapter disabled, driver issue, or hardware fault | Check Wi-Fi switch, restart device, reinstall or update the adapter driver |
| Wi-Fi network appears but won’t connect | Wrong password, security mismatch, corrupted saved network | Forget the network, reconnect and re-enter the password carefully |
| Connected to Wi-Fi but internet does not work | Router, DNS, ISP or NBN problem | Test another device, check modem lights, restart router, check NBN/ISP status |
| Wi-Fi works only near the router | Weak signal, interference, or poor home network coverage | Review router placement or consider mesh Wi-Fi setup in Melbourne |
What to Do First if Your Computer Won’t Connect to Wi-Fi
Before changing advanced settings, do these fast checks. They solve a large percentage of home and office Wi-Fi issues.
1) Check that Wi-Fi is turned on
On Windows, confirm airplane mode is off and Wi-Fi is enabled in Settings > Network & internet. Microsoft also recommends using the built-in network troubleshooter and forgetting then reconnecting to the network if needed. On a Mac, Apple advises checking that Wi-Fi is on in the menu bar and confirming the Mac is trying to join the correct network.
2) Make sure you are joining the correct network
In apartment blocks and dense Melbourne neighbourhoods, it is easy to click the wrong Wi-Fi name. Confirm the SSID exactly matches your home or office network. If the password has recently changed, remove the saved network and reconnect from scratch. If you have forgotten the password, see our guide to Wi-Fi password recovery.
3) Restart your computer and router
Restart your computer first, then power-cycle the router and modem. Unplug them for about 30 seconds, plug them back in, and wait several minutes for the lights to settle. Microsoft and Apple both include restart steps in their official troubleshooting guidance because temporary network stack issues are common.
4) Check whether other devices are online
If your phone, smart TV and tablet are also offline, this is probably not just a laptop problem. Check your modem/router lights and see whether your provider or NBN is reporting an outage. NBN advises checking for known incidents and your internet provider’s status page when a service suddenly drops out.
Helpful internal guide: If your device shows a Wi-Fi connection but websites still will not load, read Wi-Fi connected but no internet and NBN connected but no internet.
Step-by-Step Fixes for a Laptop or PC That Won’t Connect to Wi-Fi
Forget the network and reconnect
Saved network profiles can become corrupted. Remove the network from your device, then connect again manually. This is one of the most effective fixes for the search intent computer won’t connect to Wi-Fi after password change.
- Windows: Go to Settings > Network & internet > Wi-Fi > Manage known networks, choose your network, then select Forget.
- Mac: Go to System Settings > Wi-Fi > Advanced, remove the saved network, then reconnect.
Microsoft and Apple both document forgetting and rejoining a network as a standard recovery step.
Move closer to the router and reduce interference
If the signal is weak, your device may see the network but fail to hold a stable connection. Thick walls, large mirrors, metal cabinets, microwaves and some cordless devices can all interfere with Wi-Fi. NBN lists household interference and poor placement as common causes of Wi-Fi trouble.
If dropouts mainly happen in one room, review how to fix Wi-Fi dead zones at home, small Wi-Fi range fixes and mesh network vs traditional router vs NBN modem.
Update or reinstall your network adapter driver
If your PC cannot see networks, keeps disconnecting, or started failing after a Windows update, the wireless adapter driver may be outdated or damaged. Microsoft’s guidance includes updating drivers and, when needed, removing and reinstalling the adapter. citeturn605192search0turn605192search15
- Open Device Manager and check under Network adapters.
- If your adapter shows a warning icon, update the driver.
- If the issue persists, uninstall the adapter and restart the computer so Windows can reinstall it.
Run the Windows Network Troubleshooter or Mac Wireless Diagnostics
For Windows users, the built-in troubleshooter can automatically detect common network configuration faults. Mac users can use Wireless Diagnostics and Wi-Fi recommendations for detected issues.
Check TCP/IP, DNS and network reset options
If your computer connects to the router but not to the internet, the network stack may be corrupted. A network reset is often worth trying after the simpler fixes above fail.
- Windows: Settings > Network & internet > Advanced network settings > Network reset.
- Mac: Remove the saved network and reconnect, then review VPN or security software if the issue continues.
Apple specifically notes that VPN and security software can interfere with internet access over Wi-Fi.
Check your router settings and firmware
Router issues are a major content gap in the old version. Many ranking pages cover router-side causes in more detail, so this page now does the same. Log in to your router and confirm:
- Firmware is up to date.
- WPA2 or WPA3 security is enabled.
- MAC filtering or access controls are not blocking the device.
- The 2.4 GHz and 5 GHz bands are configured sensibly for your space.
If you need help with full setup, see how to set up a wireless router, Wi-Fi setup and home networking.
Try Ethernet to isolate the problem
If an Ethernet cable works but Wi-Fi does not, the internet service is probably fine and the fault is inside the wireless setup. That points to the router’s Wi-Fi radio, channel settings, signal coverage or the computer’s wireless adapter.
For readers comparing connection types, we also recommend Wi-Fi vs Ethernet.
How to Tell if the Problem Is Your Router, Modem or NBN
This is where local commercial intent matters. Many Melbourne users are not just looking for general advice – they want to know whether they need NBN setup help, a Wi-Fi technician, or computer repairs in Melbourne.
Signs it is probably a computer issue
- Other devices connect normally to the same Wi-Fi.
- Your computer can see the network but fails while other devices stay online.
- The issue started after an update, driver change or VPN install.
- An Ethernet connection works on the same computer.
Signs it is probably a Wi-Fi network issue
- Several devices disconnect at the same time.
- The signal is weak in certain rooms.
- You get random dropouts during video calls or streaming.
- The router is hidden in a cupboard or placed near sources of interference.
Signs it may be an NBN or ISP issue
- The Wi-Fi connects, but no device gets internet access.
- The modem shows warning lights or unusual light patterns.
- Your provider has a known outage in the area.
- The problem started after moving house or changing providers.
If those symptoms match your situation, these pages are the best next step:
- NBN installation problems and fixes
- How to set up an NBN modem
- Internet installation
- NBN installation Melbourne
- Mesh Wi-Fi setup Melbourne
When DIY Is Enough and When to Call a Professional
You can usually fix a one-off connection problem yourself. However, professional help is the better option when:
- the Wi-Fi problem keeps returning,
- your home has weak coverage or dead zones,
- the router, modem and NBN equipment are incorrectly installed,
- your device may have a faulty Wi-Fi card, or
- you want a full home network setup done properly the first time.
Frequently Asked Questions
Why won’t my computer connect to Wi-Fi but my phone will?
That usually means the problem is on the computer, not the internet service. Check whether Wi-Fi is turned on, forget and reconnect to the network, update the wireless adapter driver, and remove any VPN or security software that may be interfering.
Why does my laptop say connected to Wi-Fi but there is no internet?
Your laptop may be connected to the router but not reaching the internet. Test another device, restart the modem and router, and check whether the NBN service or ISP is down. Our guides on Wi-Fi connected but no internet and NBN connected but no internet cover this in more detail.
Can a Windows update stop Wi-Fi from working?
Yes. A Windows update can occasionally break or replace the wireless driver. If the timing lines up, update or reinstall the adapter driver and run the network troubleshooter. Microsoft includes both steps in its official fix workflow.
What if my Mac won’t join the network at all?
Apple recommends checking Wi-Fi status, confirming the date and time, restarting the Mac, updating macOS if possible, reviewing VPN or security software, and using built-in diagnostics.
